A United Boeing 787 Dreamliner takes off within view of the Houston skyline. Houston Bush Intercontinental is United's second-busiest hub (by passengers).

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The Manhattan skyline can be seen from Terminal C at Newark Liberty International Airport, which is United's third-busiest hub (by passengers).

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Travelers ride on the AirTrain at Newark Liberty International Airport, which is United's third-busiest hub (by passengers).

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The iconic roof structure at Denver International Airport, which is United's fourth-biggest hub (by passengers).

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A new 23-mile electric commuter rail line will link Denver's airport to downtown. Denver is United's fourth-biggest hub (by passengers).

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The Golden Gate Bridge is seen with the city of San Francisco behind it. San Francisco is United's fifth-biggest hub (by passengers).

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A United Airlines maintenance hangar is seen at San Francisco International, the carrier's fifth biggest hub by passengers.

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The distinctive main terminal building of Washington Dulles is seen in October 2014. Dulles is United's sixth-busiest hub (by passengers).

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Los Angeles International Airport -- and it's iconic LAX sign -- are seen in October 2013. LAX is United's seventh-busiest hub (by passengers).

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An shot of the National Mall and the iconic buildings of Washington, D.C. Washington's Dulles airport is United's sixth-busiest hub (by passengers).

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The skyline of downtown Los Angeles is seen in December 2016. LAX is United's seventh-busiest hub (by passengers).

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The skyline of central Tokyo. United Airlines count's Tokyo's Narita Airport as one of its hubs.

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United Airlines counts Guam as a hub for its major presence in the Pacific and Micronesia. Here, a beach area of Guam is seen in an October 2015 photo.

This image provided by United shows the new colors that will soon be coming to employee uniforms, seats and in-flight linens.

United Airlines

United Airlines’ signature “Rhapsody Blue” color is about to get some company.

United is adding a set of new hues to its color palette, an update to its branding that will soon be seen on new employee uniforms. The new uniforms have not yet been unveiled. But United did give details to employees Thursday about the new colors they’ll see on those uniforms, which are scheduled to begin rolling out to workers in 2020.

Joining Rhapsody Blue – United’s well-known navy shade with a name inspired by the "Rhapsody in Blue" title that United has used as its theme song -– are several new additions. They’ll include United Blue, Pacific Blue, Premium Purple, Runway Gray, Sky Blue and Atlantic Amethyst.

In 2017, the carrier conducted more than a dozen employee “road shows” at its hub airports. Workers from across United’s network were invited to come to check out samples from designers and give their feedback about what they want – and do not want – to be included in the new uniforms.

United describes it as part of an effort to incorporate employees’ wish-list items from the very beginning.

Now, the colors are some of the first details to emerge from that effort.

This image provided by United shows its new purple hues on its new international-style premium economy seats.

United Airlines

“Our updated brand design will be reflected in our new employee uniforms, where you will see a unifying base color across all work groups that speaks to the core of the United brand —Rhapsody Blue,” United spokeswoman Erin Benson said in an e-mail to USA TODAY’s Today in the Sky blog. “The new employee uniforms will also include pops of our new colors, which employees have told us they want in the various listening sessions we’ve conducted.”

But it won’t just be on employee uniforms where customers will notice United’s updated color choices.

United’s new purple shades also will be added to the upholstering on some of its seats, including the company's new international-style premium economy seats that debuted this summer on one of the airline’s refurbished Boeing 777-200 jets.

The expanded palette of blues and grays also will be seen in updates to the linens used during United’s meal services. Benson says the linen patterns using those colors have been inspired by United’s “globe” logo, which is perhaps most-noticeable on the tails of United’s aircraft.

United’s new shades of blue and grey will be used in its in-flight linens.

Passengers snap photos of themselves in front of a banner sending off the United Airlines Boeing 747 at San Francisco International Airport on Nov. 7, 2017.

“I had to be here,” said passenger John Vanderford, shown here on the right, as he partied with other Flight 747 customers prior to boarding. “It’s the last 747 flight. I remember flying it as a kid, on this exact route — San Francisco to Honolulu."

A United Airlines flight attendant has her makeup done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

A United Airlines flight attendant has her hair done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

A United Airlines flight attendant has her makeup done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

United Airlines flight attendants Thu-ha Nguyen, left, and Jamie Chin take a selfie before boarding United Airlines' last Boeing 747 flight on Nov. 7, 2017, in San Francisco.

United Airlines flight attendants have their hair and makeup done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

Passengers Dominic and Monica Fabian of San Francisco pose in front of a banner sending off the United Airlines Boeing 747 at San Francisco International Airport on Nov. 7, 2017.

A passenger holds a special plaque commemorating several other first and last flights he's done over the years before boarding United AIrlines' last Boeing 747 flight on Nov. 7, 2017.

Kevin Weber hands out custom-made Boeing 747 pins, featuring United liveries over the decades, before the airline's last Boeing 747 flight on Nov. 7, 2017.

A United Airlines ticket agent poses with special tickets and ticket jackets printed for the airline's last Boeing 747 flight.

Gift bags rest on the chairs of the last United Airlines Boeing 747 before its final flight on Nov. 7, 2017.

United rolled out a “throwback” theme for the flight. Crews donned 1970s retro uniforms and customers were offered items from a “1970s-inspired” menu.

A passenger on United’s final 747 flight takes the retro theme seriously, right down to a fake cigarette. It’s easy to forget smoking was allowed on planes.

The unique four-engine throttle aboard the last United Airlines Boeing 747 on Nov. 7, 2017.

United Airlines CEO Oscar Munoz poses for portraits aboard the carrier's last Boeing 747 flight on Nov. 7, 2017 in San Francisco. The airline is retiring the iconic jet after 47 years.

United Airlines CEO Oscar Munoz poses for portraits aboard the carrier's last Boeing 747 flight on Nov. 7, 2017 in San Francisco. The airline is retiring the iconic jet after 47 years.

Mechanic Ron Lostica, a 31-year United Airlines veteran, poses for a photo aboard the last United Airlines Boeing 747 before its final passenger flight on Nov. 7, 2017.

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United Airlines' last Boeing 747 is shown before its final passenger flight on Nov. 7, 2017. The airline is retiring the iconic jet after 47 years of service.

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United Airlines' last Boeing 747 is shown before its final passenger flight on Nov. 7, 2017. The airline is retiring the iconic jet after 47 years of service.

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Passengers check in for United Airlines' special Boeing 747 send-off flight from San Francisco to Honolulu on Nov. 7, 2017.

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A flight board at San Francisco International Airport shows United Airlines' Flight 747 to Honolulu on Nov. 7, 2017.

Passengers snap photos of themselves in front of a banner sending off the United Airlines Boeing 747 at San Francisco International Airport on Nov. 7, 2017.

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“I had to be here,” said passenger John Vanderford, shown here on the right, as he partied with other Flight 747 customers prior to boarding. “It’s the last 747 flight. I remember flying it as a kid, on this exact route — San Francisco to Honolulu."

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A United Airlines flight attendant has her makeup done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

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A United Airlines flight attendant has her hair done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

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A United Airlines flight attendant has her makeup done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

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United Airlines flight attendants Thu-ha Nguyen, left, and Jamie Chin take a selfie before boarding United Airlines' last Boeing 747 flight on Nov. 7, 2017, in San Francisco.

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United Airlines flight attendants have their hair and makeup done prior to United Airlines' last Boeing 747 flight on Nov. 7, 2017.

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Passengers Dominic and Monica Fabian of San Francisco pose in front of a banner sending off the United Airlines Boeing 747 at San Francisco International Airport on Nov. 7, 2017.

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A passenger holds a special plaque commemorating several other first and last flights he's done over the years before boarding United AIrlines' last Boeing 747 flight on Nov. 7, 2017.

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Kevin Weber hands out custom-made Boeing 747 pins, featuring United liveries over the decades, before the airline's last Boeing 747 flight on Nov. 7, 2017.

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A United Airlines ticket agent poses with special tickets and ticket jackets printed for the airline's last Boeing 747 flight.

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Gift bags rest on the chairs of the last United Airlines Boeing 747 before its final flight on Nov. 7, 2017.

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United rolled out a “throwback” theme for the flight. Crews donned 1970s retro uniforms and customers were offered items from a “1970s-inspired” menu.

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A passenger on United’s final 747 flight takes the retro theme seriously, right down to a fake cigarette. It’s easy to forget smoking was allowed on planes.

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The unique four-engine throttle aboard the last United Airlines Boeing 747 on Nov. 7, 2017.

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United Airlines CEO Oscar Munoz poses for portraits aboard the carrier's last Boeing 747 flight on Nov. 7, 2017 in San Francisco. The airline is retiring the iconic jet after 47 years.

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United Airlines CEO Oscar Munoz poses for portraits aboard the carrier's last Boeing 747 flight on Nov. 7, 2017 in San Francisco. The airline is retiring the iconic jet after 47 years.

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Mechanic Ron Lostica, a 31-year United Airlines veteran, poses for a photo aboard the last United Airlines Boeing 747 before its final passenger flight on Nov. 7, 2017.

40 COOL AVIATION PICS: Behind the scenes at Washington Dulles

July's #avgeek photo gallery

An Emirates Airbus A380 taxies out for departure past the FAA tower at Washington Dulles International Airport on June 29, 2018.

United Airlines' tails at Washington Dulles International Airport on June 29, 2018.

A friendly robot asks for feedback outside of a sports-themed restaurant at Washington Dulles International Airport on June 29, 2018.

A United Airlines Boeing 767-300 takes off from Washington Dulles International Airport on June 29, 2018.

A ramp worker opens up the front cargo door on an All Nippon Airways Boeing 777-300 after it arrived from Tokyo to Washington Dulles International Airport on June 29, 2018.

Tails representing a wide variety of international airlines line a terminal at Washington Dulles International Airport on June 29, 2018.

A particularly warn stretch of ramp lists numerous aircraft types at a parking stop at Washington Dulles International Airport on June 29, 2018.

Two AeroTrain cars await work at a maintenance facility at Washington Dulles International Airport on June 29, 2018.

Hector Murcia spray paints aircraft names onto the parking locations on a terminal A ramp at Washington Dulles International Airport on June 29, 2018.

Slips of paper note details on incoming international flights at Washington Dulles International Airport on June 29, 2018. Each will need mobile lounges to take the passengers to immigration control.

Passengers queue to board an Air India flight to Delhi at Washington Dulles International Airport on June 29, 2018.

The unique architecture of Washington DC's Dulles International Airport, seen on June 29, 2018.

Duty Manager Brad Weems, working in operations, takes a phone call during an afternoon shift at Washington Dulles International Airport on June 29, 2018.

A business jet taxies out for departure as a United Airlines Boeing 777 heads off into the evening from Washington Dulles International Airport on June 29, 2018.

An Air France A380 dwarfs the nearby porter Q400 turboprop at Washington Dulles International Airport on June 29, 2018.

United Airlines logo is seen at Washington Dulles International Airport on June 29, 2018.

The unique font of Washington's Dulles International Airport frames a ticket agent processing passengers early in the morning on June 29, 2018.

Clad in a Star Alliance scheme, an Air India Boeing 777-300 sets out for New Delhi, India, at Washington Dulles International Airport on June 29, 2018.

United Airlines' tails at Washington Dulles International Airport on June 29, 2018.

Passengers mill about Terminal B in Washington Dulles International Airport on June 29, 2018.

Bags take a ride down a conveyor belt after arriving on a Porter Bombardier Q400 from Toronto at Washington Dulles International Airport on June 29, 2018.

A Korean Air Boeing 777-300 lands at Washington Dulles International Airport on June 29, 2018 as an Emirates A380 waits to depart for Dubai.

A passengers checks on a connecting flight at Washington Dulles International Airport on June 29, 2018.

United Airlines jets are readied for their next flight at Washington Dulles International Airport on June 29, 2018.

Airport operations escorts the massive Airbus A380 as it taxies out for departure at Washington Dulles International Airport on June 29, 2018. The jet's wingspan is so large it can reach past the taxiway, presenting a risk of damaging equipment.

Fire trucks await a call they hope never comes at a remote station at Washington Dulles International Airport on June 29, 2018.

A mobile lounge controller directs the unique busses around Washington Dulles International Airport on June 29, 2018. The position is likely the only such in the U.S.

An Emirates Airbus A380 taxies out to Runway 30 at Washington Dulles International Airport on June 29, 2018.

A Brussels Airlines Airbus A330 takes off from Washington Dulles International Airport on June 29, 2018.

Planes line up at their gates at Washington Dulles International Airport on June 29, 2018.

Doors slide shut at the Turkish Airlines lounge at Washington Dulles International Airport on June 29, 2018.

Tails representing a wide variety of international airlines line the terminal at Washington Dulles International Airport on June 29, 2018.

United Airlines jets queue in line to depart Washington Dulles International Airport on June 29, 2018.

A Scandinavian Airlines Airbus A330 boards for its flight back to Europe at Washington Dulles International Airport on June 29, 2018.

An Austrian Airlines Boeing 767 taxies out for departure as a United Express CRJ takes off from Washington Dulles International Airport on June 29, 2018.

United Airlines' tails at Washington Dulles International Airport on June 29, 2018.

Aircraft line up for the evening departures bank at Washington Dulles International Airport on June 29, 2018.

An Austrian Airlines Boeing 767 departs for Europe at Washington Dulles International Airport on June 29, 2018.

A United Airlines Boeing 767-300 takes off from Washington Dulles International Airport on June 29, 2018.

A United Airlines Boeing 767-300 takes off from Washington Dulles International Airport on June 29, 2018.

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An Emirates Airbus A380 taxies out for departure past the FAA tower at Washington Dulles International Airport on June 29, 2018.

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United Airlines' tails at Washington Dulles International Airport on June 29, 2018.

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A friendly robot asks for feedback outside of a sports-themed restaurant at Washington Dulles International Airport on June 29, 2018.

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A United Airlines Boeing 767-300 takes off from Washington Dulles International Airport on June 29, 2018.

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A ramp worker opens up the front cargo door on an All Nippon Airways Boeing 777-300 after it arrived from Tokyo to Washington Dulles International Airport on June 29, 2018.

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Tails representing a wide variety of international airlines line a terminal at Washington Dulles International Airport on June 29, 2018.

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A particularly warn stretch of ramp lists numerous aircraft types at a parking stop at Washington Dulles International Airport on June 29, 2018.

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Two AeroTrain cars await work at a maintenance facility at Washington Dulles International Airport on June 29, 2018.

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Hector Murcia spray paints aircraft names onto the parking locations on a terminal A ramp at Washington Dulles International Airport on June 29, 2018.

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Slips of paper note details on incoming international flights at Washington Dulles International Airport on June 29, 2018. Each will need mobile lounges to take the passengers to immigration control.

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Passengers queue to board an Air India flight to Delhi at Washington Dulles International Airport on June 29, 2018.

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The unique architecture of Washington DC's Dulles International Airport, seen on June 29, 2018.

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Duty Manager Brad Weems, working in operations, takes a phone call during an afternoon shift at Washington Dulles International Airport on June 29, 2018.

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A business jet taxies out for departure as a United Airlines Boeing 777 heads off into the evening from Washington Dulles International Airport on June 29, 2018.

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An Air France A380 dwarfs the nearby porter Q400 turboprop at Washington Dulles International Airport on June 29, 2018.

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United Airlines logo is seen at Washington Dulles International Airport on June 29, 2018.

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The unique font of Washington's Dulles International Airport frames a ticket agent processing passengers early in the morning on June 29, 2018.

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Clad in a Star Alliance scheme, an Air India Boeing 777-300 sets out for New Delhi, India, at Washington Dulles International Airport on June 29, 2018.

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United Airlines' tails at Washington Dulles International Airport on June 29, 2018.

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Passengers mill about Terminal B in Washington Dulles International Airport on June 29, 2018.

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Bags take a ride down a conveyor belt after arriving on a Porter Bombardier Q400 from Toronto at Washington Dulles International Airport on June 29, 2018.

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A Korean Air Boeing 777-300 lands at Washington Dulles International Airport on June 29, 2018 as an Emirates A380 waits to depart for Dubai.

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A passengers checks on a connecting flight at Washington Dulles International Airport on June 29, 2018.

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United Airlines jets are readied for their next flight at Washington Dulles International Airport on June 29, 2018.

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Airport operations escorts the massive Airbus A380 as it taxies out for departure at Washington Dulles International Airport on June 29, 2018. The jet's wingspan is so large it can reach past the taxiway, presenting a risk of damaging equipment.

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Fire trucks await a call they hope never comes at a remote station at Washington Dulles International Airport on June 29, 2018.

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A mobile lounge controller directs the unique busses around Washington Dulles International Airport on June 29, 2018. The position is likely the only such in the U.S.

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An Emirates Airbus A380 taxies out to Runway 30 at Washington Dulles International Airport on June 29, 2018.

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A Brussels Airlines Airbus A330 takes off from Washington Dulles International Airport on June 29, 2018.

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Planes line up at their gates at Washington Dulles International Airport on June 29, 2018.

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Doors slide shut at the Turkish Airlines lounge at Washington Dulles International Airport on June 29, 2018.

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Tails representing a wide variety of international airlines line the terminal at Washington Dulles International Airport on June 29, 2018.

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United Airlines jets queue in line to depart Washington Dulles International Airport on June 29, 2018.

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A Scandinavian Airlines Airbus A330 boards for its flight back to Europe at Washington Dulles International Airport on June 29, 2018.

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An Austrian Airlines Boeing 767 taxies out for departure as a United Express CRJ takes off from Washington Dulles International Airport on June 29, 2018.

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United Airlines' tails at Washington Dulles International Airport on June 29, 2018.

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Aircraft line up for the evening departures bank at Washington Dulles International Airport on June 29, 2018.

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An Austrian Airlines Boeing 767 departs for Europe at Washington Dulles International Airport on June 29, 2018.

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A United Airlines Boeing 767-300 takes off from Washington Dulles International Airport on June 29, 2018.

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A United Airlines Boeing 767-300 takes off from Washington Dulles International Airport on June 29, 2018.